Villanueva, P. M., Acurantes, D. C., & Aranzaso, R. C. (2003). Writing skills for college (2nd ed.). Katha Publishing.
Cita Chicago Style (17a ed.)Villanueva, Perla M., Dolores C. Acurantes, y Roberta C. Aranzaso. Writing Skills for College. 2nd ed. Quezon City: Katha Publishing, 2003.
Cita MLA (9a ed.)Villanueva, Perla M., et al. Writing Skills for College. 2nd ed. Katha Publishing, 2003.
Precaución: Estas citas no son 100% exactas.